CN111038579B - Control device for steering control valve bank of electrically-driven chassis - Google Patents
Control device for steering control valve bank of electrically-driven chassis Download PDFInfo
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- CN111038579B CN111038579B CN201911415642.7A CN201911415642A CN111038579B CN 111038579 B CN111038579 B CN 111038579B CN 201911415642 A CN201911415642 A CN 201911415642A CN 111038579 B CN111038579 B CN 111038579B
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- Prior art keywords
- valve
- way valve
- liquid outlet
- liquid inlet
- chassis steering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/062—Details, component parts
- B62D5/064—Pump driven independently from vehicle engine, e.g. electric driven pump
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/08—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of steering valve used
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/30—Safety devices, e.g. alternate emergency power supply or transmission means to ensure steering upon failure of the primary steering means
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Steering Mechanism (AREA)
Abstract
The invention belongs to the technical field of steering systems, and discloses an electric drive chassis steering control valve group, which comprises: the energy accumulator comprises a first one-way valve, a second one-way valve, a logic valve, an energy accumulator, a third one-way valve, a fourth one-way valve and an electromagnetic directional valve; the liquid outlet of the first one-way valve and the liquid outlet of the second one-way valve are respectively connected with the liquid outlet of the control valve group, and the liquid inlet of the first one-way valve is connected with a first liquid inlet joint; the accumulator is connected with the liquid inlet of the second one-way valve through the logic valve; the inlet of the electromagnetic directional valve is connected with a second liquid inlet connector, the first liquid outlet of the electromagnetic directional valve is connected with the inlet of the second one-way valve through the third one-way valve, and the second liquid outlet of the electromagnetic directional valve is connected with the energy accumulator through the fourth one-way valve. The steering control valve group and the device for the electrically-driven chassis provided by the invention can meet the emergency steering requirement of heavy electrically-driven vehicle volume.
Description
Technical Field
The invention relates to the technical field of emergency steering, in particular to an electric drive chassis steering control valve group and a control device.
Background
For heavy or very heavy vehicles, a hydraulically assisted steering version is usually employed. For an electric drive chassis which cannot be provided with an emergency pump due to the fact that a drive axle is not arranged, a double-source electric pump is generally adopted to provide a power source for a steering system; however, since the load is large, the steering of the wheels cannot be achieved once the voltage is reduced to a certain extent, and therefore the dual-source electric pump cannot be reliably applied to a heavy vehicle.
Disclosure of Invention
The invention provides an electrically-driven chassis steering control valve group, which solves the technical problem of poor emergency steering performance of heavy electric driving capacity in the prior art.
In order to solve the technical problem, the invention provides an electrically-driven chassis steering control valve group, which comprises: the energy accumulator comprises a first one-way valve, a second one-way valve, a logic valve, an energy accumulator, a third one-way valve, a fourth one-way valve and an electromagnetic directional valve;
the liquid outlet of the first one-way valve and the liquid outlet of the second one-way valve are respectively connected with the liquid outlet of the control valve group, and the liquid inlet of the first one-way valve is connected with a first liquid inlet joint;
the accumulator is connected with the liquid inlet of the second one-way valve through the logic valve;
the inlet of the electromagnetic directional valve is connected with a second liquid inlet connector, the first liquid outlet of the electromagnetic directional valve is connected with the inlet of the second one-way valve through the third one-way valve, and the second liquid outlet of the electromagnetic directional valve is connected with the energy accumulator through the fourth one-way valve.
Further, the electrically driven chassis steering control valve group further comprises: a first throttle valve;
the liquid outlet of the first one-way valve and the liquid outlet of the second one-way valve are respectively connected with the liquid outlet of the control valve group through the first throttling valve.
Further, the electrically driven chassis steering control valve group further comprises: a second throttle valve;
and the fourth check valve is connected at the liquid inlet of the logic valve.
Further, the electrically driven chassis steering control valve group further comprises: a third throttle valve;
and the third throttle valve is connected between the second liquid outlet of the electromagnetic directional valve and the liquid inlet of the fourth one-way valve.
Further, the electrically driven chassis steering control valve group further comprises: a pressure switch;
the pressure switch is connected with the interface of the energy accumulator.
Further, the electrically driven chassis steering control valve group further comprises: an overflow valve;
the overflow valve is connected with a port of the energy accumulator.
Furthermore, a first pressure measuring joint is arranged at a liquid outlet of the control valve group.
Further, a second pressure measuring joint is arranged at the interface of the energy accumulator.
Further, the electrically driven chassis steering control valve group further comprises: a valve block base;
the first check valve, the second check valve, the logic valve, the accumulator, the third check valve, the fourth check valve and the electromagnetic directional valve are respectively arranged on the valve group base;
and a fluid pipeline is arranged in the valve group base.
An electric drive chassis steering control device comprising: the first electric pump, the second electric pump and the electrically-driven chassis steering control valve group;
the first electric pump is connected with the first liquid inlet joint, and the second electric pump is connected with the second liquid inlet joint.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the embodiment of the application provides an electricity drive chassis steering control valves and device, through set up the energy storage that comprises logic valve, the energy storage ware, the third check valve, fourth check valve and solenoid directional valve on the basis at electronic steering control structure and assist and turn to the structure, can normal operating and for the energy storage ware can charge when the conventional operation, turn to when the auxiliary capacity degradation when falling the electricity, the energy storage ware can assist the realization and turn to, thereby when the emergent demand that turns to appears in heavy electricity drive volume, can be reliable carry out the auxiliary steering.
Drawings
FIG. 1 is a schematic structural diagram of an electrically driven chassis steering control valve assembly provided by the present invention;
fig. 2 is a schematic diagram of the inheritance structure of an electric drive chassis steering control valve group provided by the invention.
Detailed Description
The embodiment of the application provides an electrically-driven chassis steering control valve group, and solves the technical problem that the emergency steering performance of heavy electric driving quantity is poor in the prior art.
In order to better understand the technical solutions, the technical solutions will be described in detail below with reference to the drawings and the specific embodiments of the specification, and it should be understood that the embodiments and specific features of the embodiments of the present invention are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application, and the technical features of the embodiments and examples of the present application may be combined with each other without conflict.
Referring to fig. 1, an electrically driven chassis steering control valve assembly includes: a first check valve 2, a second check valve 4, a logic valve 5, an accumulator 7, a third check valve 11, a fourth check valve 12 and a solenoid directional valve 14.
The liquid outlet of first check valve 2 with the liquid outlet of second check valve 4 links to each other with the liquid outlet A of valve unit respectively, the inlet of first check valve 2 is connected with first liquid inlet joint P1. Under the operating mode of turning to, first electric pump 16 pass through first liquid inlet joint P1 with first check valve 2 is connected, and the hydraulic oil of 16 outputs of first electric pump directly flows to liquid outlet A through first check valve 2, promotes the power cylinder action, and then realizes that the wheel turns to. Wherein the first check valve 2 can prevent the hydraulic oil of the second electric pump 17 from flowing into the first electric pump 16.
A liquid inlet of the electromagnetic directional valve 14 is connected with a second liquid inlet joint P2, a first liquid outlet of the electromagnetic directional valve 14 is connected with a liquid inlet of the second one-way valve 4 through the third one-way valve 11, and a second liquid outlet of the electromagnetic directional valve 14 is connected with the energy accumulator 7 through the fourth one-way valve 12; the accumulator 7 is connected with the liquid inlet of the second one-way valve 4 through the logic valve 5.
Under the working condition of turning to, second electric pump 17 through second liquid inlet joint P2 with solenoid directional valve 14 connects, and the hydraulic oil of second electric pump 17 output passes through solenoid directional valve 14, third check valve 11, the direct flow direction of second check valve 4 liquid outlet A, promote the power cylinder action, and then realize that the wheel turns to. Wherein the second check valve 4 can prevent the hydraulic oil of the first electric pump 2 from flowing into the second electric pump 4 in series. The third check valve 11 can prevent the hydraulic oil in the accumulator 7 from flowing into the electric pump 4.
Under the filling condition, the hydraulic oil of 2 exports of first electric pump passes through 2 direct flow to liquid outlet A of first check valve promotes the action of helping hand jar, and then realizes that the wheel turns to. The hydraulic oil output by the second electric pump 4 flows to the accumulator 7 through the electromagnetic directional valve 14 and the fourth check valve 12 to be filled.
It is worth mentioning that the electrically driven chassis steering control valve group further comprises: a pressure switch 8; the pressure switch 8 is connected to the connection of the energy accumulator 7. The electromagnetic directional valve 14 is controlled by the pressure switch 8, when the pressure in the energy accumulator 7 is lower than a certain set value, a high level is output, the electromagnetic directional valve 14 is electrified through a relay in an electromagnetic circuit, and the hydraulic oil output by the second electric pump 17 is switched into the energy accumulator 7. When the pressure in the accumulator 7 is higher than a certain set value, a low level is output, the electromagnetic directional valve 14 is de-energized through a relay in an electromagnetic circuit, and the hydraulic oil output by the second electric pump 17 is switched to the liquid outlet a. The fourth check valve 12 can prevent the hydraulic oil in the accumulator 7 from leaking to the liquid outlet a through the gap between the valve core and the valve body of the electromagnetic directional valve 14.
Under the emergency working condition, the first electric pump 16 and the electric pump 17 do not work due to system faults and no hydraulic oil is output, at the moment, the logic valve 5 is communicated, the hydraulic oil in the energy accumulator 7 is communicated with the liquid outlet A through the logic valve 5 and the second one-way valve 4, the power-assisted cylinder is pushed to act, and further the steering of the wheels is realized.
The logic valve 5 is used for automatically switching oil paths when the liquid outlet A has no flow output, so that hydraulic oil in the energy accumulator 7 flows to the liquid outlet A.
Further, the electrically driven chassis steering control valve group further comprises: a first throttle valve 3; the liquid outlet of the first one-way valve 2 and the liquid outlet of the second one-way valve 4 are respectively connected with the liquid outlet A of the control valve group through the first throttling valve 3, and the flow control of auxiliary steering is realized.
Further, the electrically driven chassis steering control valve group further comprises: a second throttle valve 6; the fourth check valve 12 is connected at the liquid inlet of the logic valve 5, so that the flow of the energy accumulator 7 is reduced, and emergency steering operation is avoided from being over-emergency.
Further, the electrically driven chassis steering control valve group further comprises: a third throttle valve 13; the third throttle valve 13 is connected between the second liquid outlet of the electromagnetic directional valve 14 and the liquid inlet of the fourth one-way valve 12, so that the energy accumulator 7 is protected, and the over-fast filling is prevented.
Further, the electrically driven chassis steering control valve group further comprises: an overflow valve 9; the overflow valve 9 is connected with the interface of the accumulator 7. The overflow valve 9 is used for protecting the energy accumulator 7 in the filling process and preventing the energy accumulator 7 from being broken due to the failure of the pressure switch
Furthermore, a first pressure measuring joint 1 is arranged at a liquid outlet of the control valve group, the working pressure of the liquid outlet A is detected, and the working state of the steering system is judged. And a second pressure measuring joint 10 is arranged at the interface of the energy accumulator 7, and is used for detecting the filling pressure of the energy accumulator and judging the working state of the energy accumulator.
Referring to fig. 2, the electrically driven chassis steering control valve assembly further includes: a valve block base 15; the first check valve 2, the second check valve 4, the logic valve 5, the accumulator 7, the third check valve 11, the fourth check valve 12 and the electromagnetic directional valve 14 are respectively arranged on the valve group base 15; and high integration level application is realized.
The valve group base 15 is provided with a fluid pipeline inside according to the fluid connection relationship, so as to realize connection of the valves which are integrally arranged.
An electric drive chassis steering control device comprising: the first electric pump 16, the second electric pump 17 and the electrically-driven chassis steering control valve group; the first electric pump 16 is connected to the first inlet P1, and the second electric pump 17 is connected to the second inlet P2.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the embodiment of the application provides an electricity drive chassis steering control valves and device, through set up the energy storage that comprises logic valve, the energy storage ware, the third check valve, fourth check valve and solenoid directional valve on the basis at electronic steering control structure and assist and turn to the structure, can normal operating and for the energy storage ware can charge when the conventional operation, turn to when the auxiliary capacity degradation when falling the electricity, the energy storage ware can assist the realization and turn to, thereby when the emergent demand that turns to appears in heavy electricity drive volume, can be reliable carry out the auxiliary steering. Specifically, under the non-emergency steering working condition, oil of the two electric pumps directly enters the power cylinder through the oil outlet A to push the wheels to steer. Under the working condition that the energy accumulator 7 is filled, hydraulic oil of the second electric pump 17 is filled into the energy accumulator 7 through the electromagnetic directional valve 14, and when the pressure reaches a set value, the hydraulic oil of the second electric pump 17 flows to the oil outlet A through the electromagnetic directional valve 17. Under the emergency working condition, hydraulic oil in the energy accumulator 7 flows to the oil outlet A through the logic valve 5 and enters the power cylinder to push the wheels to steer.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides an electricity drive chassis steering control valves for constitute electricity drive chassis steering control device jointly with first electric pump, second electric pump, its characterized in that includes: the energy accumulator comprises a first one-way valve, a second one-way valve, a logic valve, an energy accumulator, a third one-way valve, a fourth one-way valve and an electromagnetic directional valve;
the liquid outlet of the first one-way valve and the liquid outlet of the second one-way valve are respectively connected with the liquid outlet of the control valve group, and the liquid inlet of the first one-way valve is connected with a first liquid inlet joint;
the logic valve is used for automatically switching oil ways when no flow is output from the liquid outlet of the control valve group, so that hydraulic oil in the energy accumulator flows to the liquid outlet of the control valve group;
the accumulator is connected with the liquid inlet of the second one-way valve through the logic valve;
a liquid inlet of the electromagnetic directional valve is connected with a second liquid inlet joint, a first liquid outlet of the electromagnetic directional valve is connected with a liquid inlet of the second one-way valve through the third one-way valve, and a second liquid outlet of the electromagnetic directional valve is connected with the energy accumulator through the fourth one-way valve;
the first electric pump is connected with the first liquid inlet joint, and the second electric pump is connected with the second liquid inlet joint.
2. The electrically driven chassis steering valve assembly of claim 1, further comprising: a first throttle valve;
the liquid outlet of the first one-way valve and the liquid outlet of the second one-way valve are respectively connected with the liquid outlet of the control valve group through the first throttling valve.
3. The electrically driven chassis steering valve assembly of claim 1, further comprising: a second throttle valve;
and the fourth check valve is connected at the liquid inlet of the logic valve.
4. The electrically driven chassis steering valve assembly of claim 1, further comprising: a third throttle valve;
and the third throttle valve is connected between the second liquid outlet of the electromagnetic directional valve and the liquid inlet of the fourth one-way valve.
5. The electrically driven chassis steering valve assembly of claim 1, further comprising: a pressure switch;
the pressure switch is connected with the interface of the energy accumulator.
6. The electrically driven chassis steering valve assembly of claim 1, further comprising: an overflow valve;
the overflow valve is connected with a port of the energy accumulator.
7. The electrically driven chassis steering control valve pack of claim 1, wherein the outlet port of the control valve pack is provided with a first pressure tap.
8. The set of electrically driven chassis steering control valves of claim 1, wherein a second pressure tap is provided at the interface of the accumulator.
9. The electrically driven chassis steering valve assembly of claim 1, further comprising: a valve block base;
the first check valve, the second check valve, the logic valve, the accumulator, the third check valve, the fourth check valve and the electromagnetic directional valve are respectively arranged on the valve group base;
and a fluid pipeline is arranged in the valve group base.
10. An electric drive chassis steering control device, comprising: a first electric pump, a second electric pump, and an electrically driven chassis steering control valve set as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911415642.7A CN111038579B (en) | 2019-12-31 | 2019-12-31 | Control device for steering control valve bank of electrically-driven chassis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911415642.7A CN111038579B (en) | 2019-12-31 | 2019-12-31 | Control device for steering control valve bank of electrically-driven chassis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111038579A CN111038579A (en) | 2020-04-21 |
| CN111038579B true CN111038579B (en) | 2021-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911415642.7A Active CN111038579B (en) | 2019-12-31 | 2019-12-31 | Control device for steering control valve bank of electrically-driven chassis |
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| Country | Link |
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| CN (1) | CN111038579B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431802B (en) * | 2020-12-11 | 2023-03-21 | 湖北航天技术研究院特种车辆技术中心 | Steering control valve group |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4325286A (en) * | 1979-08-13 | 1982-04-20 | Zahnradfabrik Friedrichshafen, Ag. | Steering valve mechanism having closed neutral position |
| DE19733032C1 (en) * | 1997-07-31 | 1998-09-24 | Mercedes Benz Lenkungen Gmbh | Hydraulic servo-assisted steering arrangement for motor vehicle |
| CN103496396B (en) * | 2013-10-12 | 2016-06-29 | 浙江科技学院 | A kind of electricity-saving driving wheel vehicle differential speed servo steering system and control method thereof |
| CN204095878U (en) * | 2014-08-22 | 2015-01-14 | 山东临沃重机有限公司 | A kind of mine truck is met an urgent need turning device |
| CN110182256A (en) * | 2019-06-11 | 2019-08-30 | 芜湖安佳捷汽车科技有限公司 | A kind of steering and emergency system |
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2019
- 2019-12-31 CN CN201911415642.7A patent/CN111038579B/en active Active
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| CN111038579A (en) | 2020-04-21 |
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